Cotton gin



Mar. 13, 1923. l 1,448,022

c. R. woon COTTON G IN Filed Marr. 51, 1921 2 sheets-sheet i c. RWOOD Mar. 13

COTTON GIN Filed Mar. 51,'1921 2 sheets-sheet 2 INVENfrQF:l wi'rNEssEs ATTORNEY Vif. T

'rs Y y y innig VATENT orma.

CHARLES E. woon, or MEMPHIS, TENNESSEE, yASSIGNOE oEoNE-roUETH To BEVERLY o. GoonEIoE AND oNE-EoUE'TH To WALTER E. Moss, BoTI-roE MEMPHIS, TENNESSEE.

coTToN G IN.

Application filed March 31, 192i. Serial No. 457,305.

To all whom t may concern.'

Be it known that I, CHARLES R. Woon, a citizen of the United States, residin at Memphis, in the county of Shelby and tate of Tennessee, have invented a new and useful Improvement in Cotton Gins, of which the following is a specification.

This invention has reference to cotton gins and is particularly designed for gin# ning long staple cotton;

The object of the inventionv is to provide means'whereb-y the lint removed from the.

cotton seed iS in turn stripped from the gin saws without damage to but actually improving the cotton and without breaking or rupturing the lint and so destroying its long fiber character. The invention is also adaptable to Short Staple cotton without necessitating any change in the gin. In conjunction with means for removing the lint from the saw teeth without damage to the lint, provision is made for Separating motes from the lint before such lint passes into the lint condenser. y

The invention contemplates the employment of a plurality of gangs of saws with each gang mounted on a hollow shaft and the several hollow shafts carried a main Shaft to which `each hollow shaft is connectedby a controllable clutch mechanism whereby the main or power driving shaft and one or more of the hollow shafts may be coupled together or disconnected from each other so that in the event of the stopping of one or more of the gangs of gin saws, for any reason, the other gins may continue in operation without interruption;

The invention also contemplates the employment of certain mechanisms and structures to be hereinafter described and which are shown in the accompanying drawings forming part of this specification and with which the following detailed description is to be read for an understanding of the invention but without confining theinvention to any strict conformity with the showing of the drawings, for the invention may be changed and modified so long as such changes and modifications ymark no departure from the'salient features of the invention as expressed in the appended claims- In the drawings:

Fig.- l is a side elevation with some parts ing the invention. v

invention. f '55 Fig. 2 is a front to rear verticalsection of thev structure Shown in Fig. `l.

' Fig. 3 is an inverted plan view with some parts iny horizontal section. of a gin embodyin section, ofaiootton vgin embodying the Fig. 4 is a horizontal'section through a group of nozzles. for' directing air against the teeth of the saws to remove lint carried Fig. 5 is a face view partly in section of the Vstructure shown in Fig. 4. v

Fig. 6 isa vertical section through one of the nozzles and adjacent parts.

Referring to the drawings, there is shown a frame 1 carrying bearings 2 fora hollow shaft 3 carrying a gang of saws- 4 withl intervening space blocks 5. Through the hollowy shaft there extends aso-lid shaft 6, which at one end carriesa pulley 7 which may be taken as indicative of either a belt pulley or a connection for an electric motor. .At Y one end of each gin, of which there may be several in the battery, thereis provided .a friction clutch 8 tofcouple the powerV or solid sha-ft 6 to the respectivev gin while' the solid shaft 6 mayextend beyond the last gn'in the battery and be continued to drive-the baling press, which latter, however, is not shown in the drawings. n .f

The gin saws 4 are preferably vformed with teeth 9,` eachv having its outer face curved` on a radius substantially that indicatedby the dotted line 9a in Fig. 6 and an inner face curved onv a shorter radius indi'- cated at 9b, the difference in radiuscausing the inner and outer' walls of .the `teeth to intersect, thereby producing an overhanging pointv with the entrance between theteeth considerably wider thanthe throats ofthe teeth, thus facilitating thestrip-pingofthe 95 cotton from the teeth. `The reason for the particular curvature of the teeth or substantially suchlcurvature is to engagev the lint fibers without breaking them', to work on either dry or damp cotton, and the large Spacing of the teeth causing the teeth toy gin faster. v f l In the'breast of the gin between the saws' are curved separating ribs 10 stopping Short of the periphery of thel saw near theiroots105 of the teeth. There isfalsoy .provided a roll I lin for each saw, and shaped to cause a shifting of the cotton lengthwise of the roll box, the movement ot the cotton in vthe .roll rbox being brought about by the action of the f saws thereon, so that they saws progressively Y engage fresh spots in the roll as the latter rotatesrin the roll box, and so ultimately the lint and all the cotton seed contained in the roll box. ln this manner, the saw teeth engage the lint and.v carry it to thespace between the ribs 10 and the roll box rboard 13, stripping the lint tromthe seed, which seed thereupon iinds its way out of the bottom ot the breast.

At the bottom edge of the curved or roll board 13, whereadjacent to the teeth of the saws, are the notches 15 over. each saw to preventthe saw` from striking the board, while at the same time permitting the approach vot the lower edge ot the board so close to the ribs 10 as to prevent the seed from passing through the space 16 between the upper ends ot the ribs 10 and thebottom of the board 13. The lint carried by the` saw teeth is drawn through the space 16.

y.Supported ,by a beam 17y forming ypart ot the frame of the gin is an upright mote board 18 with its lower edge terminating above .the path ot1 the teeth 9 of the saws. Below the mote board 18 are moteribs 19, each leaving a-spaee 20 largeenough to permit the lint carried by the yteeth of the saws to pass and also .permit streams oli-air to flow therethrough in a'direction opposite to the travel of the teeth, so as to blowniotes rom'the 'lint approaching the openings 20, these motes falling past the saws in the spaces between them to the floor or other point of disposal. The mote ribs 19 are carried vbybars'21 tast in the frame ot the gin. Back ot the mote board 18 and ribs 19 in a nozzle pipe 22 connected ata suitable point or points by a duct 23 with a flue 24C coming from a suitable blower 25 driven by ymeshing gearing'26, 27, or in other` appropriate. manner, to the main line shaft 6.

Adjacent to the edge of each saw/l where passing' through the space 2O is a nozzle 23 shown more in detail in Figs. 1, 5 and 6 4to which reference is particularly directed.

Each nozzle 28, of which there: is one for each saw, has U-shaped walls 29,230 extending to the lower end or outlet whereby the outlet is in the form of a U-shapednozzle with the walls 29 shorter than the walls 30 and the latter bentxtoward each other and toward the walls 30.

The teeth of the saw enter between the U-shaped walls 29 close to the mouth ot the nozzle, carrying lint for a short distance along the nozzle and then into position to receivestreams ot' air directed lengthwise of the nozzle and of the portion of the saw traversing the nozzle, so that these streams of air will engage the lint carried by the saw. ,Each nozzle 28 is provided with a duct or passage 31 directing the air under and on top of the cotton carried by the teeth and thereby stripping it from the saw. The wall 29 near the upper end has formed therethrough a slot or opening 32 best shown in Figs. 5 and 6, and overriddenby a tongue 33 directed ton/'ard the opening 20, so .that the nozzle pipe also provides a stream of air for each! saw in a direction opposite to the rotation of the saw and this stream of air flows through the opening 20and blows any metes which may occur in the cotton carried by the saw away from the `opening 20 thereby disposing ot' them, as previously.. described. 4

Carried bythe nozzle pipe and by the bar 21 are the walls ot aconduit 34 connected to a main lint flue 35. lWhen the saw teeth loaded with lint enter between the walls 30 ot the nozzles, the lint is brought into contactv .with the side walls 30a which causes av loosening up and agitation of the cotton libers on the teeth, thereby cleaning and facilitating the stripping of the cotton libers from the teeth.

What is claimed isz- 1. In a cotton gin, a. gang of gin-saws, a series oi nozzles into which the teeth of the saw extend,vand a nozzle pipe and blower flue feeding the nozzle pipe. with air, each nozzle deepening with respect to the path ot the teeth with the deep end` of the nozzle constituting the air projecting end thereof on opposite sides oi' the saw teethin the line of travel of thesaw, wherebythe air lifts the lint` carried by the saw and strips it from said saw.

2. ln a cotton gin, a gang of gin saws, a series oi'nozzles into which the teeth of. the saw extend, and av nozzle pipe and. blower flue eedingfthe nozzle pipe ywith air,..each nozzle deepening with `respect to the path oi the teeth with. the deep end oi the nozzle constituting .the air projecting end thereof `on opposite sides or the saw teeth in the line ottravel otthe saw, whereby the air lifts the lint carried by the saw yand strips it from said saw, each nozzle being provided with means for directing a stream of air in the reversed direction to the travel ot the lint where entering the nozzle to prevent. motes troinfreaching the nozzle.

3. in a cotton gin, gin saws, and an air nozzle foreach sawentered by said saw to a progressively deeper extent as the saw approaches the discharge end et the nozzle,

whereby the lint carried by the teeth is lifted and'spread by the air stream and discharged from the teeth.

4. In a cotton gin, a gang of gin saws, a series of air nozzles each having a channel of U-shape and individual to a Saw and entered by the saw teeth, said channel deepening in the direction of travel of the teeth, and means for supplying each channel with air under pressure.

5. In a cotton gin, a gang of gin saws, a series of air nozzles each having a channel of U-shape and individual to a saw and entered by the saw teeth, said channel deepening in the direction of travel of the teeth, and means for supplying each channel with air under pressure, each channel at its shallower end having` Ia passage communieating with the air supply and directed reversely to the movement of the saw through the nozzle andprovided with a lip directed toward the saw teeth, whereby a stream or' air blows against the lint carried lby the saw teeth to prevent the entrance of motes into the nozzle. l

6.- In a cotton gin, rotatable gin saws, and a U-shaped nozzle for each saw extending in the direction' Lof rotation of the saw teeth and gradually deepening, whereby the saw teeth loaded with lint enterbetween the side walls of the U-shaped nozzle causing a loosening up and agitation of the cotton fibers on the teeth, thus cleaning the cotton and facilitating the stripping of the cotton fibers from the teeth by the air issuing from the nozzle. i y

In testimony, that I claim the foregoing as my own, I have hereto ,affixed my signa' ture. i

CHARLES R. WOOD. 

